Rinnai RE140e

Last updated: October 31, 2026

Rinnai RE140e
3.3/5#17 of 20 in gas tankless water heaters
3.3

A good outdoor heater for a one or two bathroom home in a mild climate.

  • 140,000 BTU/hHeating power
  • 5.3 GPMMax flow
  • 0.81UEF
  • 15 yearsHeat exchanger warranty
Check price at Amazon$884.10Check price at Amazon$884.10

Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • No vent pipe, so installation on an outside wall is simple
  • Handles two showers at once in a smaller home
  • Long 15 year heat exchanger warranty for a lower priced heater
Cons
  • Too little flow for three showers at once in a cold climate
  • A 0.81 UEF uses more gas than a condensing heater
  • Labor is covered for only 1 year

The Rinnai RE family

Every Rinnai RE model we rank, smallest first. Ratings compare each against its own fuel.

ModelHeating powerRatingPrice
Rinnai RE140e (this one)140,000 BTU/h3.3/5$884.10
Rinnai RE199e199,000 BTU/h4.0/5$1,280.79
Rinnai RE199i199,000 BTU/h4.0/5$1,280.79

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its fuel. How we rank explains each one.

Specifications

Model numberREU-VE1720WD-US
Heating
FuelGas
Gas typeNatural gas or propane
Gas input10,400 to 140,000 BTU/h
Max flow5.3 GPM
UEF0.81
CondensingNo
ENERGY STARNo
Installation
VentingOutdoor
Weight38.3 lb
Features
Built-in recirculationNo
Wi-FiNo
Heat exchanger warranty15 years
Parts warranty5 years

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